There is no existing thermostat... I need to run a new 'control' wire from the heatlink to the boiler...
Is it a new install, How does the boiler know when it is up to temperature?
We run it off the internal clock, inefficiently, hence wanting to sort a new thermostat. It's about 3 or 4 years old but never installed along with a thermostat
@lynx started
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There is no existing thermostat... I need to run a new 'control' wire from the heatlink to the boiler...